andy oliver 1

Thanks again for suggestions. It turns out Chris Walby was right and the ESC had failed, I guess I hadn't closed the throttle quickly enough after the prop strike - every day's a schoolday !

Many thanks for all the above. I will try all the suggestions and post the result

I had a low speed prop strike in long grass with an Eflite Timber. The prop and motor appeared to have sustained no damage whatsoever and their shafts are still perfectly unbent. However when power is applied to the motor the propeller initially oscillates back and forth a few degrees, and then accelerates normally as more power applied while making a high pitched buzzing noise. At full throttle it will not produce much more than about half power. As the motor itself appears fine is it possible the ESC has failed or it's programming has somehow gone haywire ? Motor EFLM 108018 ESC EFLA 1040U Many thanks